package work02.w5.control;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class Lunar {
	 private int year;
	    private int month;
	    private int day;
	    private boolean leap;
	    final static String chineseNumber[] = {"正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "腊"};
	    final static String chineseNumber1[] = {"一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二"};
	    static SimpleDateFormat chineseDateFormat = new SimpleDateFormat("yyyy年MM月dd日");
	    final static long[] lunarInfo = new long[]
	    {0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2,
	     0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977,
	     0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970,
	     0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950,
	     0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557,
	     0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5d0, 0x14573, 0x052d0, 0x0a9a8, 0x0e950, 0x06aa0,
	     0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0,
	     0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b5a0, 0x195a6,
	     0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570,
	     0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0,
	     0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5,
	     0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930,
	     0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530,
	     0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45,
	     0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0};
	//====== 传回农历 y年的总天数
	    final private static int yearDays(int y) {
	        int i, sum = 348;
	        for (i = 0x8000; i > 0x8; i >>= 1) {
	            if ((lunarInfo[y - 1900] & i) != 0) sum += 1;
	        }
	        return (sum + leapDays(y));
	    }
	//====== 传回农历 y年闰月的天数
	    final private static int leapDays(int y) {
	        if (leapMonth(y) != 0) {
	            if ((lunarInfo[y - 1900] & 0x10000) != 0)
	                return 30;
	            else
	                return 29;
	        } else
	            return 0;
	    }
	//====== 传回农历 y年闰哪个月 1-12 , 没闰传回 0
	    final private static int leapMonth(int y) {
	        return (int) (lunarInfo[y - 1900] & 0xf);
	    }
	//====== 传回农历 y年m月的总天数
	    final private static int monthDays(int y, int m) {
	        if ((lunarInfo[y - 1900] & (0x10000 >> m)) == 0)
	            return 29;
	        else
	            return 30;
	    }
	//====== 传回农历 y年的生肖
	    /**
	     * 得到农历的生肖
	     * @return 例2006年10月1日 狗
	     */
	    final public String animalsYear() {
	        final String[] Animals = new String[]{"鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪"};
	        return Animals[(year - 4) % 12];
	    }
	//====== 传入 月日的offset 传回干支, 0=甲子
	    final private static String cyclicalm(int num) {
	        final String[] Gan = new String[]{"甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"};
	        final String[] Zhi = new String[]{"子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"};
	        return (Gan[num % 10] + Zhi[num % 12]);
	    }
	//====== 传入 offset 传回干支, 0=甲子
	    final public String cyclical() {
	        int num = year - 1900 + 36;
	        return (cyclicalm(num));
	    }
	    /**
	     * 传出y年m月d日对应的农历.
	     * yearCyl3:农历年与1864的相差数 ?
	     * monCyl4:从1900年1月31日以来,闰月数
	     * dayCyl5:与1900年1月31日相差的天数,再加40 ?
	     *
	     * @param cal
	     * @return
	     */
	    public void setDay(Calendar cal) {
	        int yearCyl, monCyl, dayCyl;
	        int leapMonth = 0;
	        Date baseDate = null;
	        try {
	            baseDate = chineseDateFormat.parse("1900年1月31日");
	        } catch (ParseException e) {
	            e.printStackTrace(); //To change body of catch statement use Options | File Templates.
	        }
	//求出和1900年1月31日相差的天数
	        int offset = (int) ((cal.getTime().getTime() - baseDate.getTime()) / 86400000L);
	        dayCyl = offset + 40;
	        monCyl = 14;
	//用offset减去每农历年的天数
	// 计算当天是农历第几天
	//i最终结果是农历的年份
	//offset是当年的第几天
	        int iYear, daysOfYear = 0;
	        for (iYear = 1900; iYear < 2050 && offset > 0; iYear++) {
	            daysOfYear = yearDays(iYear);
	            offset -= daysOfYear;
	            monCyl += 12;
	        }
	        if (offset < 0) {
	            offset += daysOfYear;
	            iYear--;
	            monCyl -= 12;
	        }
	//农历年份
	        year = iYear;
	        yearCyl = iYear - 1864;
	        leapMonth = leapMonth(iYear); //闰哪个月,1-12
	        leap = false;
	//用当年的天数offset,逐个减去每月（农历）的天数，求出当天是本月的第几天
	        int iMonth, daysOfMonth = 0;
	        for (iMonth = 1; iMonth < 13 && offset > 0; iMonth++) {
	//闰月
	            if (leapMonth > 0 && iMonth == (leapMonth + 1) && !leap) {
	                --iMonth;
	                leap = true;
	                daysOfMonth = leapDays(year);
	            } else
	                daysOfMonth = monthDays(year, iMonth);
	            offset -= daysOfMonth;
	//解除闰月
	            if (leap && iMonth == (leapMonth + 1)) leap = false;
	            if (!leap) monCyl++;
	        }
	//offset为0时，并且刚才计算的月份是闰月，要校正
	        if (offset == 0 && leapMonth > 0 && iMonth == leapMonth + 1) {
	            if (leap) {
	                leap = false;
	            } else {
	                leap = true;
	                --iMonth;
	                --monCyl;
	            }
	        }
	//offset小于0时，也要校正
	        if (offset < 0) {
	            offset += daysOfMonth;
	            --iMonth;
	            --monCyl;
	        }
	        month = iMonth;
	        day = offset + 1;
	    }
	    public static String getChinaDayString(int day) {
	        String chineseTen[] = {"初", "十", "廿", "卅"};
	        int n = day % 10 == 0 ? 9 : day % 10 - 1;
	        if (day > 30)
	            return "";
	        if (day == 10)
	            return "初十";
	        else
	            return chineseTen[day / 10] + chineseNumber1[n];
	    }
	    public String toString() {
	        return (leap ? "闰" : "") + chineseNumber[month - 1] + "月" + getChinaDayString(day);
	    }
	    /**
	     * @author Eric
	     * 得到农历年份的文字描述,如:
	     */
	    public String toYear(){
	    	return (leap ? "闰" : ""+cyclical()+animalsYear()+"年");
	    }
	    /**
	     * @author Eric
	     * 得到农历年份的文字描述,如:
	     */
	    public String toMonth(){
	    	return chineseNumber[month - 1] + "月";
	    }
	    /**
	     * @author Eric
	     * 得到农历年份的文字描述,如:
	     */
	    public String toDay(){
	    	 return getChinaDayString(day);
	    }
	
	    public String getChinaWeekdayString(String weekday){
	    if(weekday.equals("Mon"))
	       return "一";
	    if(weekday.equals("Tue"))
	       return "二";
	    if(weekday.equals("Wed"))
	       return "三";
	    if(weekday.equals("Thu"))
	       return "四";
	    if(weekday.equals("Fri"))
	       return "五";
	    if(weekday.equals("Sat"))
	       return "六";
	    if(weekday.equals("Sun"))
	       return "日";
	    else
	       return "";
	    
	    }
	    
	    
	    public static void main(String[] args) throws ParseException{
	    Calendar today = Calendar.getInstance();
//	    today.setTime(new java.util.Date());//加载当前日期
	      today.setTime(chineseDateFormat.parse("2006年10月1日"));//加载自定义日期
	    Lunar lunar = new Lunar();
	   lunar.setDay(today);
//	    System.out.print(lunar.cyclical()+"年");//计算输出阴历年份
//	    System.out.println(lunar.toString());//计算输出阴历日期
//	    System.out.println(lunar.animalsYear());//计算输出属相
//	    System.out.println(new java.sql.Date(today.getTime().getTime()));//输出阳历日期
//	      System.out.println("星期"+lunar.getChinaWeekdayString(today.getTime().toString().substring(0,3)));//计算输出星期几
	    
	    System.out.println(lunar.toYear());
	    }
	}